I stumbled across this new portable amplifier by TOPPING on eBay a few days ago called NX1. I was wondering if anyone's tried the amp or purchased one yet? It's stated to run for 100+ hours a charge and looks built pretty well. If anyone's heard one yet please tell us about it. Here's some photo's and specs from the listing. Edit: (We were purchasing from eBay member tool_nerd except he put his price up by $100!. Thanks to member ebrian who did some searching we're now ordering the amp for only $36 from Deal Xtreme) http://www.dx.com/p/topping-nx1-headphone-amplifier-for-mp3-mp4-cellphone-tablet-pc-black-294594#.U51T5vmSySo Can also be found on eBay for a little more: http://www.ebay.com.au/itm/Topping-NX1-Earphone-Headphone-Portable-Stero-MP3-Amplifier-3-5mm-Rechargeable-/271526210088?pt=AU_Electronics_Audio_Amplifiers&hash=item3f38392a28&_uhb=1 USA buyers can find NX1 on Amazon: http://www.amazon.com/Topping-Portable-Earphone-Amplifier-Black/dp/B00HFMNR4M/ref=sr_1_1?ie=UTF8&qid=1406205812&sr=8-1&keywords=topping+nx1 Navigate to the bottom of this post for linked members impressions. Some pictures for size comparison iPod Touch 4g: Colourfly C3: DX50: Members Impressions: Baycode: Link (Click Here) DJScope: Link (Click Here) Polyrythm: Link (Click Here) Xtraglactic Part 1: Link (Click Here) Xtraglactic Part2: Link (Click Here) Skamp's NX1 measurements: Link (Click Here) D marc0: Link (Click Here) FlnixNOver: Link (Click Here) hay2014: Link (Click Here) yacobx: Link (Click here) svyr: Link (Click here) bookaboo: Link (Click Here) medoza476: Link (Click Here) stefu: Link (Click Here) xeizo: Link (Click Here) Topping NX1 measurements courtesy of Head-fi member Skamp. skamp I've always been curious to see how those "audiophile" portable amps actually performed. I also wanted a new toy to play with, and it was so cheap, I pulled the trigger and ordered the NX1, to measure it. Here are my results: Output impedance: 0.15Ω RMAA (unloaded): http://outpost.fr/rmaa/Topping_NX1.htm RMAA loaded with Denon AH-D2000: http://outpost.fr/rmaa/Topping_NX1-Denon_AH-D2000.htm RMAA loaded with Shure SE425: http://outpost.fr/rmaa/Topping_NX1-Shure_SE425.htm Source for all RMAA measurements: EMU 0204 USB line-out Basically, the NX1 performs very well, with near zero output impedance, high signal to noise ratio, ruler flat frequency response, no distortion to speak of, and high output. I have to admit, I'm very pleasantly surprised. I can't even hear any hiss with my Shures. The picture doesn't quite convey how tiny that thing is. Anyway, no need to get all lyrical, the amp's performance speaks for itself.